Re: What the hell is up with my hookah?
I had a similar problem around 2 months ago. Really similar actually. Everything I tried resulted in the same flavorless session. Everything. It drove me nuts to no end and unfortunately I was smoking late after work and didn't have anyone to verify my flavor. (if you can, see if it's you or the smoke... most likely it's the smoke but just to be sure)
Pick up a couple new flavors and see if that fixes it. I ended up tossing around 300g of shisha in frustration and picking up some new stuff which seemed to help. In the end a little break and new shisha seemed to fix the problem.
Everything you're doing sounds perfect. Give it time and fool around with bowls, shisha, charcoal, and setup. Good luck!